Siren: Difference between revisions

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'''3-2-070
'''urn:mrn:iala:dic:3-2-0070'''


A sound signal emitter using the periodic escape of compressed air through a rotary shutter.
a deep sounding warning in which the sound is produced by the passage of air across slits or holes in a rotating disc, in which the membrane is activated electrically


{{IALAFooter}}
{{IALAFooter}}

Latest revision as of 09:55, 17 September 2026

urn:mrn:iala:dic:3-2-0070

a deep sounding warning in which the sound is produced by the passage of air across slits or holes in a rotating disc, in which the membrane is activated electrically




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)